Key fob reprogramming for a Citroen C3

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My Name: sarah247

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Joined: Sun Jan 04, 2015 9:44 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: I dont know
Fuel Type: Petrol
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Help, my mum has lost her spare key and the one she has has broken, she can use it to drive its just the buttons that have worn away so cant lock her car, I don't no how or where to get one from!!!
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My Name: C3driver52

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Model: C3 2002-2005, Original shape model
Year: 2003 (03)
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Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
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Engine name: TU3 (75 PS)
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sarah247 wrote:Help, my mum has lost her spare key and the one she has has broken, she can use it to drive its just the buttons that have worn away so cant lock her car, I don't no how or where to get one from!!!
Hi sarah247, if its only the rubber buttons that have come away, like this one:

Image

You can easily replace the whole plastic housing including the buttons with a kit like this one:

Replacement Citroen C3 Key Fob Cover (CLICK HERE) (eBay).

You can find some pictures in this topic:

Early Citroen C3 transponder key fob parts (plip) fix
My Name: Roy

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Model: C3 2006-2009, Facelift model
Year: 2008 (08)
Engine Size: 1.6 (16v)
Fuel Type: Diesel
Mileage: 81000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Hi
I've got new batteries in my car and in one of the key fobs. The key with the new battery works the remote locking very occasionally, the other one works properly, every time. I've tried the reprogramming procedure several times but the faulty one is no better. Any help please. Thanks
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My Name: C3driver52

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Posts: 1937
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
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HI Roy
Roy wrote:Hi
I've got new batteries in my car and in one of the key fobs. The key with the new battery works the remote locking very occasionally, the other one works properly, every time. I've tried the reprogramming procedure several times but the faulty one is no better. Any help please. Thanks
You are in the best place to diagnose this fault by having 2 keys :D

If one key works well and the other doesn't you can be sure one of the keys is bad. Swap the batteries is easy to do which can identify a bad battery (or just fit new ones all round).

An intermittent fault like yours is probably going to be caused by a worn or damaged or misaligned switch in the fob. Disassemble the fob to make sure the button is making good contact with the switch. There are some pictures in this topic (Early C3 transponder key fob parts (plip) fix) which can help you identify the internal parts.

If it turns out to be a faulty switch, its possible to repair them. I hope to have a repair guide for this on the forum in the next few days :D


UPDATE:
Its here, just scroll down to see the fob switches removed and replaced.
My Name: Roy

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Posts: 22
Joined: Sat Jan 24, 2015 10:25 am
Model: C3 2006-2009, Facelift model
Year: 2008 (08)
Engine Size: 1.6 (16v)
Fuel Type: Diesel
Mileage: 81000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Thanks. With a lot of fiddling I've worked out the springy tab that connects the battery holder to the circuit board was missing its spot slightly, moving sideways too much as the two halves came together. I've adjusted it very gently, not wanting to break it. Now it works. By the way, I've got the later flick-round oblong style key-fob, so the circuit board and battery alignment is in two parts. Thanks for your help.
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My Name: C3CAR

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Model: C3 2002-2005, Original shape model
Year: 2002 (02)
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Fuel Type: Diesel
Mileage: 140000
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DPF: No
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Roy wrote:Thanks. With a lot of fiddling I've worked out the springy tab that connects the battery holder to the circuit board was missing its spot slightly, moving sideways too much as the two halves came together. I've adjusted it very gently, not wanting to break it. Now it works
That's Great
Roy wrote:By the way, I've got the later flick-round oblong style key-fob, so the circuit board and battery alignment is in two parts.
Yes, the images in the link are for the 2002, the 2006 and on have a different key fob. The new key looks like a step backwards in development with the battery separated from the circuit board which can lead to intermittent service.

Later (2006)
battery location in a 3 button Citroen C3 key fob
battery location in a 3 button Citroen C3 key fob
Early (2002)
battery location on a 2 button Citroen C3 key fob
battery location on a 2 button Citroen C3 key fob
My Name: allybonkers

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Joined: Fri Mar 13, 2015 8:27 pm
Model: C3 2006-2009, Facelift model
Year: 2009 (59)
Engine Size: 1.6 (16v)
Fuel Type: Diesel
Mileage: 90000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Hiya, I replaced my key fob battery last night (CR1620) and the remote didn't work. So i tried to reprograme it to the car. I tried the key in the ignition, push the lock button for 10 seconds with everything off, wait 1 minute. This didnt work and i tried several times. The car battery is good and wondered if the new remote battery is faulty? Any idea what i can try?
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Fuel Type: Diesel
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Hi allybonkers
allybonkers wrote:Hiya, I replaced my key fob battery last night (CR1620) and the remote didn't work.
If the fob was working and you made it not working by fitting a new battery, I would say you fitted the battery incorrectly or the battery is bad. There is a post about the battery not making contact correctly, did you read the previous topics to see if any apply to you? Can you test the battery or even try the previous one again?
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My Name: gfromleeds

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Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4
Fuel Type: Petrol
Mileage: 80000
Trim Level: Desire
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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Is it possible to home diy programme these "used with new blade" keys found all over ebay
I have a mate that can cut the key but his shop don't get involved with the electronics
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My Name: Arfur Dent

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Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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gfromleeds wrote:Is it possible to home diy programme these "used with new blade" keys found all over ebay
No. It is IMPOSSIBLE.

You need an unused virgin remote board to reprogram to the BSI for remote unlocking.

If its just the immobiliser, then a new immo chip is cheap, but it has to be a new, (unused) virgin chip, like these new PCF7936AS chips (on eBay)

Use lexia for both.
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